From: Anonymous <anonymous-MUDIJn/1Q3AaHdxRYFc1FNBPR1lH4CV8@public.gmane.org>
To: Alex Williamson
<alex.williamson-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
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Subject: Re: [PATCH 04/13] pci: New pci_dma_quirk()
Date: Thu, 17 May 2012 15:19:51 +0800 [thread overview]
Message-ID: <CAJtEV7YMrsttPfAdL0_uht-ZRwCHhYwHTvypCc6TfEzTEGaijQ@mail.gmail.com> (raw)
In-Reply-To: <20120511225555.30496.80525.stgit-xdHQ/5r00wBBDLzU/O5InQ@public.gmane.org>
Alex,
On Sat, May 12, 2012 at 6:55 AM, Alex Williamson
<alex.williamson-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> wrote:
> Integrating IOMMU groups more closely into the driver core allows
> us to more easily work around DMA quirks. The Ricoh multifunction
> controller is a favorite example of devices that are currently
> incompatible with IOMMU isolation as all the functions use the
> requestor ID of function 0 for DMA. Passing this device into
> pci_dma_quirk returns the PCI device to use for DMA. The IOMMU
> driver can then construct an IOMMU group including both devices.
>
Please give some thought to the Marvell SATA controller quirk as well.
Instead of multiple visible functions using the same requester ID of
function 0, the Marvell device only makes function 0 visible, but uses
the requestor ID of function 1 as well during DMA.
See https://bugzilla.redhat.com/show_bug.cgi?id=757166
--
A.
next prev parent reply other threads:[~2012-05-17 7:19 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-11 22:55 [PATCH 00/13] IOMMU Groups + VFIO Alex Williamson
[not found] ` <20120511222148.30496.68571.stgit-xdHQ/5r00wBBDLzU/O5InQ@public.gmane.org>
2012-05-11 22:55 ` [PATCH 01/13] driver core: Add iommu_group tracking to struct device Alex Williamson
2012-05-11 23:38 ` Greg KH
[not found] ` <20120511233821.GA9335-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
2012-05-11 23:58 ` Alex Williamson
2012-05-12 0:00 ` Greg KH
2012-05-11 22:55 ` [PATCH 02/13] iommu: IOMMU Groups Alex Williamson
2012-05-11 23:39 ` Greg KH
[not found] ` <20120511233950.GB9335-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
2012-05-11 23:58 ` Alex Williamson
[not found] ` <20120511225541.30496.34751.stgit-xdHQ/5r00wBBDLzU/O5InQ@public.gmane.org>
2012-05-14 1:16 ` David Gibson
[not found] ` <20120514011627.GB30229-MK4v0fQdeXQXU02nzanrWNbf9cGiqdzd@public.gmane.org>
2012-05-14 17:11 ` Alex Williamson
[not found] ` <1337015502.6954.68.camel-xdHQ/5r00wBBDLzU/O5InQ@public.gmane.org>
2012-05-15 2:03 ` David Gibson
[not found] ` <20120515020328.GG30229-MK4v0fQdeXQXU02nzanrWNbf9cGiqdzd@public.gmane.org>
2012-05-15 6:34 ` Alex Williamson
[not found] ` <1337063643.6954.166.camel-xdHQ/5r00wBBDLzU/O5InQ@public.gmane.org>
2012-05-17 3:29 ` David Gibson
2012-05-11 22:55 ` [PATCH 03/13] iommu: IOMMU groups for VT-d and AMD-Vi Alex Williamson
[not found] ` <20120511225548.30496.34428.stgit-xdHQ/5r00wBBDLzU/O5InQ@public.gmane.org>
2012-05-17 3:37 ` David Gibson
2012-05-11 22:55 ` [PATCH 04/13] pci: New pci_dma_quirk() Alex Williamson
[not found] ` <20120511225555.30496.80525.stgit-xdHQ/5r00wBBDLzU/O5InQ@public.gmane.org>
2012-05-17 3:39 ` David Gibson
[not found] ` <20120517033914.GF22069-MK4v0fQdeXQXU02nzanrWNbf9cGiqdzd@public.gmane.org>
2012-05-17 4:06 ` Alex Williamson
2012-05-17 7:19 ` Anonymous [this message]
[not found] ` <CAJtEV7YMrsttPfAdL0_uht-ZRwCHhYwHTvypCc6TfEzTEGaijQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-05-17 15:22 ` Alex Williamson
2012-05-11 22:56 ` [PATCH 05/13] pci: New pci_acs_enabled() Alex Williamson
[not found] ` <20120511225602.30496.80438.stgit-xdHQ/5r00wBBDLzU/O5InQ@public.gmane.org>
2012-05-14 22:02 ` Bjorn Helgaas
[not found] ` <CAErSpo58hKPFb5duOi64sWuR5AJDTVp0rRHkQLotYE3CMXRRhA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-05-14 22:49 ` Alex Williamson
[not found] ` <1337035766.6954.74.camel-xdHQ/5r00wBBDLzU/O5InQ@public.gmane.org>
2012-05-15 19:56 ` Bjorn Helgaas
[not found] ` <CAErSpo48ES5iLDCh1WzmHezSEYhPjhtgD5uxoY-TCTKgUBab2g-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-05-15 20:05 ` Bjorn Helgaas
2012-05-15 21:09 ` Alex Williamson
[not found] ` <1337116157.6954.212.camel-xdHQ/5r00wBBDLzU/O5InQ@public.gmane.org>
2012-05-16 13:29 ` Don Dutile
[not found] ` <4FB3ABCF.4030708-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-05-16 16:21 ` Alex Williamson
[not found] ` <1337185318.6954.243.camel-xdHQ/5r00wBBDLzU/O5InQ@public.gmane.org>
2012-05-16 19:36 ` Alex Williamson
2012-05-18 23:00 ` RESEND3: " Don Dutile
[not found] ` <4FB6D47C.4010003-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-05-19 2:47 ` Alex Williamson
[not found] ` <1337395622.28883.43.camel-xdHQ/5r00wBBDLzU/O5InQ@public.gmane.org>
2012-05-21 13:31 ` Don Dutile
[not found] ` <4FBA43C9.1080509-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-05-21 14:59 ` Alex Williamson
[not found] ` <1337612353.28883.66.camel-xdHQ/5r00wBBDLzU/O5InQ@public.gmane.org>
2012-05-21 18:14 ` Don Dutile
2012-05-11 22:56 ` [PATCH 06/13] iommu: Make use of DMA quirking and ACS enabled check for groups Alex Williamson
2012-05-11 22:56 ` [PATCH 07/13] vfio: VFIO core Alex Williamson
2012-05-11 22:56 ` [PATCH 08/13] vfio: Add documentation Alex Williamson
2012-05-11 22:56 ` [PATCH 09/13] vfio: x86 IOMMU implementation Alex Williamson
2012-05-11 22:56 ` [PATCH 10/13] pci: export pci_user functions for use by other drivers Alex Williamson
[not found] ` <20120511225636.30496.26907.stgit-xdHQ/5r00wBBDLzU/O5InQ@public.gmane.org>
2012-05-14 21:20 ` Bjorn Helgaas
2012-05-11 22:56 ` [PATCH 11/13] pci: Create common pcibios_err_to_errno Alex Williamson
[not found] ` <20120511225643.30496.36823.stgit-xdHQ/5r00wBBDLzU/O5InQ@public.gmane.org>
2012-05-21 17:55 ` Konrad Rzeszutek Wilk
2012-05-11 22:56 ` [PATCH 12/13] pci: Misc pci_reg additions Alex Williamson
2012-05-11 22:56 ` [PATCH 13/13] vfio: Add PCI device driver Alex Williamson
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